Ugh. I have played the match-up, so keep your assumptions about who is ignorant to yourself. You're just in "OMG MY DECK IS THE BEST!!!" mode and everything you say is slanted toward you and your "otherworldly-amazing" Gengar list.
I acknowledged that the match-up is generally bad for GG-- what else do you want? You want me to go further and say that Gengar just auto-wins GG with Azelf lv. X and turn 3 Psychic Lock? You think you can easily get all your Gengars out and charged with no Powers every game? The match-up can go different ways depending on several factors on the GG side of things:
- Wager/Looker's
- how early Psychic Lock is, how it affects the Gengar player's set up
- Azelf lv. X
- Nidoqueen (in tandem with Azelf lv. X and Moonlight, which both decks will usually run)
- Expert Belt (prevents OHKOs on Gardevoir even without Azelf lv. X)
All of those things WILL affect how the match-up turns out, whether you agree or not. It is not as simple as "I play Gengar and can do 110 damage to you so I automatically win."
On some of GGs other match-ups: I have actually found Donphan to be difficult, mostly due to its Body. Gardevoir 3HKOs it when both Pokemon are Belted, while it gets 2HKOed in return. Gallade has to flip 4 prizes with a Belt against a Belted Donphan, or 5 without a Belt, and that is obviously a one-time deal.
Jumpluff isn't easy either, but it at least is 2HKOed even with Belt and Shaymin lv. X, and it is a bit more susceptible to Psychic Lock than Donphan.
Charizard is reliant on Powers-- namely Roast Reveal, but also Afterburner/Firestarter, at least in the lists I've seen-- and Wager/Looker's + Psychic Lock gives it problems getting and maintaining a full bench of fire Pokemon plus energy plus a swarm of Charizards among all of the fire Pokemon that do get benched.
SP has trouble with a lot of GG: Spiritomb (no TGIs), Gallade (can get multiple OHKOs with ease), Gardevoir (no broken Powers), Mewtwo lv. X (easy tech to insert), Wager/Looker's (no chaining Cyrus'/hand-stacking, can hurt even without Psychic Lock due to limited reliance on Claydol in a lot of lists).
Gyarados is a bad match-up, but Wager/Looker's immediately preceding a Psychic Lock KO on Gyarados can turn things around quickly, especially if they don't have BTS in play (kick it out with Moonlight).
Flygon variants may have gotten faster, but they don't have Telepass (except Flygon/Gardevoir), they take more effort to get OHKOs than Gallade, and they don't enjoy Psychic Lock.
Kingdra has the early speed edge even with Spiritomb due to BTS (although Keystone Seal's blocking of Rare Candy and SSU still hurts), but Psychic Lock plus Wager/Looker's plus Nidoqueen will eventually wear them down and leave them unable to keep up a swarm or do significant damage.
Beedrill can't sustain itself without Flutter Wings or Cosmic Power, and Spiritomb slows it down at the outset.
Any Feraligatr variant is going to suffer from Psychic Lock.